AlansDronePics
 First Officer
Flight distance : 823163 ft
Guernsey
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Zaheed Posted at 2017-9-14 13:54
There is absolutely no logic to this 2 min routine. You're better off spending time to learn to fly in ATTI. Just go about flying as usual and be ready to takeover in ATTI whenever the AC behaves odd. Saved me every time. I learned it the hard way by waiting for it to fix itself the very first time I had a odd AC behavior due to compass issue, and sure enough it didn't. That was some 3-4 years ago in a NAZA FC when things were a lot less stable. This stupid routine might seem to be useful but trust me it's of no use. It can all go well in the beginning and you can still have issues mid flight, in fact ALL my incidents have been like that. And of course if you've a motor, ESC, or battery failure, nothing in this world, not even 2x of this stupid 2 min routine will do you an ounce of good. If anything those 2 mins every time will leave your AC further used and warmer, which eventually can only increase the chances of such failures, specially if you're doing consecutive flights. Instead if you even leave the AC off for those 2 minutes, it will be way more useful.
Please don't waste 2 mins in every flight because someone, who clearly doesn't know what they're talking about, told you so. I hate it when people pretend to know something they have zero idea about.
As Hallmark made quite clear amongst the replies, it is for the user to decide if they want to test out the drone before flying. To that, no more need be said.
Regarding to point and logic of the proceedure, it is quite simple.
See #85 Nemroig That post is an example where a test might have revealed a fault while the AC was recoverable.(Recoverable, nearby, like just overhead) In that example, even if no sticks functioned, eventually, the aircraft would have landed when the battery ran low.
The issue about magnetic influences on the AC is just one factor that can affect the drone. I personally believe a simpler failure in the drone is the more likely reason for a drone flying off.
If you have a simple compass, hold it near the motor of your drone. The drone should be switched off when you do this. You will find each motor has a strong magnetic field. In addition, when the drone is in flight, the current in the wire from body to motor will generate a detectable and varying magnetic field. These fields must be stronger that the earth's field, from the drone's perspective, or the compass needle wouldn't deflect from North. The point is, the Magnetometer in the drone is not so sensitive or fussy as people think.
The real worry is the software that controls the workings of the drone. When the drone is switched on, the system boots up and everything that happened on previous flights (like working perfectly) no longer applies. The drone is effectively rebourne. A glitch is always possible and if and when the code encounters it, then some sort of error occurs.
This is the likely reason for flyaways when the operator did everything right.
Most times the operator is at fault.
I expect someone will want to argue, but we all know that things made by man (or woman) do develop faults.
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